ide-floppy.c revision 49cac39e71bd6bbcf934c6ba837e21503902c088
1/* 2 * IDE ATAPI floppy driver. 3 * 4 * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> 5 * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> 6 * Copyright (C) 2005 Bartlomiej Zolnierkiewicz 7 * 8 * This driver supports the following IDE floppy drives: 9 * 10 * LS-120/240 SuperDisk 11 * Iomega Zip 100/250 12 * Iomega PC Card Clik!/PocketZip 13 * 14 * For a historical changelog see 15 * Documentation/ide/ChangeLog.ide-floppy.1996-2002 16 */ 17 18#define DRV_NAME "ide-floppy" 19 20#define IDEFLOPPY_VERSION "1.00" 21 22#include <linux/module.h> 23#include <linux/types.h> 24#include <linux/string.h> 25#include <linux/kernel.h> 26#include <linux/delay.h> 27#include <linux/timer.h> 28#include <linux/mm.h> 29#include <linux/interrupt.h> 30#include <linux/major.h> 31#include <linux/errno.h> 32#include <linux/genhd.h> 33#include <linux/slab.h> 34#include <linux/cdrom.h> 35#include <linux/ide.h> 36#include <linux/hdreg.h> 37#include <linux/bitops.h> 38#include <linux/mutex.h> 39#include <linux/scatterlist.h> 40 41#include <scsi/scsi_ioctl.h> 42 43#include <asm/byteorder.h> 44#include <linux/irq.h> 45#include <linux/uaccess.h> 46#include <linux/io.h> 47#include <asm/unaligned.h> 48 49/* define to see debug info */ 50#define IDEFLOPPY_DEBUG_LOG 0 51 52/* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ 53#define IDEFLOPPY_DEBUG(fmt, args...) 54 55#if IDEFLOPPY_DEBUG_LOG 56#define debug_log(fmt, args...) \ 57 printk(KERN_INFO "ide-floppy: " fmt, ## args) 58#else 59#define debug_log(fmt, args...) do {} while (0) 60#endif 61 62 63/* Some drives require a longer irq timeout. */ 64#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) 65 66/* 67 * After each failed packet command we issue a request sense command and retry 68 * the packet command IDEFLOPPY_MAX_PC_RETRIES times. 69 */ 70#define IDEFLOPPY_MAX_PC_RETRIES 3 71 72/* format capacities descriptor codes */ 73#define CAPACITY_INVALID 0x00 74#define CAPACITY_UNFORMATTED 0x01 75#define CAPACITY_CURRENT 0x02 76#define CAPACITY_NO_CARTRIDGE 0x03 77 78/* 79 * Most of our global data which we need to save even as we leave the driver 80 * due to an interrupt or a timer event is stored in a variable of type 81 * idefloppy_floppy_t, defined below. 82 */ 83typedef struct ide_floppy_obj { 84 ide_drive_t *drive; 85 ide_driver_t *driver; 86 struct gendisk *disk; 87 struct kref kref; 88 unsigned int openers; /* protected by BKL for now */ 89 90 /* Current packet command */ 91 struct ide_atapi_pc *pc; 92 /* Last failed packet command */ 93 struct ide_atapi_pc *failed_pc; 94 /* used for blk_{fs,pc}_request() requests */ 95 struct ide_atapi_pc queued_pc; 96 97 struct ide_atapi_pc request_sense_pc; 98 struct request request_sense_rq; 99 100 /* Last error information */ 101 u8 sense_key, asc, ascq; 102 /* delay this long before sending packet command */ 103 u8 ticks; 104 int progress_indication; 105 106 /* Device information */ 107 /* Current format */ 108 int blocks, block_size, bs_factor; 109 /* Last format capacity descriptor */ 110 u8 cap_desc[8]; 111 /* Copy of the flexible disk page */ 112 u8 flexible_disk_page[32]; 113} idefloppy_floppy_t; 114 115#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ 116 117/* IOCTLs used in low-level formatting. */ 118#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 119#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 120#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 121#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 122 123/* Error code returned in rq->errors to the higher part of the driver. */ 124#define IDEFLOPPY_ERROR_GENERAL 101 125 126/* 127 * Pages of the SELECT SENSE / MODE SENSE packet commands. 128 * See SFF-8070i spec. 129 */ 130#define IDEFLOPPY_CAPABILITIES_PAGE 0x1b 131#define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 132 133static DEFINE_MUTEX(idefloppy_ref_mutex); 134 135#define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) 136 137#define ide_floppy_g(disk) \ 138 container_of((disk)->private_data, struct ide_floppy_obj, driver) 139 140static void idefloppy_cleanup_obj(struct kref *); 141 142static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) 143{ 144 struct ide_floppy_obj *floppy = NULL; 145 146 mutex_lock(&idefloppy_ref_mutex); 147 floppy = ide_floppy_g(disk); 148 if (floppy) { 149 if (ide_device_get(floppy->drive)) 150 floppy = NULL; 151 else 152 kref_get(&floppy->kref); 153 } 154 mutex_unlock(&idefloppy_ref_mutex); 155 return floppy; 156} 157 158static void ide_floppy_put(struct ide_floppy_obj *floppy) 159{ 160 ide_drive_t *drive = floppy->drive; 161 162 mutex_lock(&idefloppy_ref_mutex); 163 kref_put(&floppy->kref, idefloppy_cleanup_obj); 164 ide_device_put(drive); 165 mutex_unlock(&idefloppy_ref_mutex); 166} 167 168/* 169 * Used to finish servicing a request. For read/write requests, we will call 170 * ide_end_request to pass to the next buffer. 171 */ 172static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) 173{ 174 idefloppy_floppy_t *floppy = drive->driver_data; 175 struct request *rq = HWGROUP(drive)->rq; 176 int error; 177 178 debug_log("Reached %s\n", __func__); 179 180 switch (uptodate) { 181 case 0: error = IDEFLOPPY_ERROR_GENERAL; break; 182 case 1: error = 0; break; 183 default: error = uptodate; 184 } 185 if (error) 186 floppy->failed_pc = NULL; 187 /* Why does this happen? */ 188 if (!rq) 189 return 0; 190 if (!blk_special_request(rq)) { 191 /* our real local end request function */ 192 ide_end_request(drive, uptodate, nsecs); 193 return 0; 194 } 195 rq->errors = error; 196 /* fixme: need to move this local also */ 197 ide_end_drive_cmd(drive, 0, 0); 198 return 0; 199} 200 201static void idefloppy_update_buffers(ide_drive_t *drive, 202 struct ide_atapi_pc *pc) 203{ 204 struct request *rq = pc->rq; 205 struct bio *bio = rq->bio; 206 207 while ((bio = rq->bio) != NULL) 208 idefloppy_end_request(drive, 1, 0); 209} 210 211static void ide_floppy_callback(ide_drive_t *drive) 212{ 213 idefloppy_floppy_t *floppy = drive->driver_data; 214 struct ide_atapi_pc *pc = floppy->pc; 215 int uptodate = pc->error ? 0 : 1; 216 217 debug_log("Reached %s\n", __func__); 218 219 if (floppy->failed_pc == pc) 220 floppy->failed_pc = NULL; 221 222 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || 223 (pc->rq && blk_pc_request(pc->rq))) 224 uptodate = 1; /* FIXME */ 225 else if (pc->c[0] == GPCMD_REQUEST_SENSE) { 226 u8 *buf = floppy->pc->buf; 227 228 if (!pc->error) { 229 floppy->sense_key = buf[2] & 0x0F; 230 floppy->asc = buf[12]; 231 floppy->ascq = buf[13]; 232 floppy->progress_indication = buf[15] & 0x80 ? 233 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; 234 235 if (floppy->failed_pc) 236 debug_log("pc = %x, ", floppy->failed_pc->c[0]); 237 238 debug_log("sense key = %x, asc = %x, ascq = %x\n", 239 floppy->sense_key, floppy->asc, floppy->ascq); 240 } else 241 printk(KERN_ERR "Error in REQUEST SENSE itself - " 242 "Aborting request!\n"); 243 } 244 245 idefloppy_end_request(drive, uptodate, 0); 246} 247 248static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) 249{ 250 ide_init_pc(pc); 251 pc->c[0] = GPCMD_REQUEST_SENSE; 252 pc->c[4] = 255; 253 pc->req_xfer = 18; 254} 255 256/* 257 * Called when an error was detected during the last packet command. We queue a 258 * request sense packet command in the head of the request list. 259 */ 260static void idefloppy_retry_pc(ide_drive_t *drive) 261{ 262 struct ide_floppy_obj *floppy = drive->driver_data; 263 struct request *rq = &floppy->request_sense_rq; 264 struct ide_atapi_pc *pc = &floppy->request_sense_pc; 265 266 (void)ide_read_error(drive); 267 idefloppy_create_request_sense_cmd(pc); 268 ide_queue_pc_head(drive, floppy->disk, pc, rq); 269} 270 271/* The usual interrupt handler called during a packet command. */ 272static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) 273{ 274 idefloppy_floppy_t *floppy = drive->driver_data; 275 276 return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr, 277 IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers, 278 idefloppy_retry_pc, NULL, ide_io_buffers); 279} 280 281/* 282 * What we have here is a classic case of a top half / bottom half interrupt 283 * service routine. In interrupt mode, the device sends an interrupt to signal 284 * that it is ready to receive a packet. However, we need to delay about 2-3 285 * ticks before issuing the packet or we gets in trouble. 286 */ 287static int idefloppy_transfer_pc(ide_drive_t *drive) 288{ 289 idefloppy_floppy_t *floppy = drive->driver_data; 290 291 /* Send the actual packet */ 292 drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12); 293 294 /* Timeout for the packet command */ 295 return IDEFLOPPY_WAIT_CMD; 296} 297 298 299/* 300 * Called as an interrupt (or directly). When the device says it's ready for a 301 * packet, we schedule the packet transfer to occur about 2-3 ticks later in 302 * transfer_pc. 303 */ 304static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive) 305{ 306 idefloppy_floppy_t *floppy = drive->driver_data; 307 struct ide_atapi_pc *pc = floppy->pc; 308 ide_expiry_t *expiry; 309 unsigned int timeout; 310 311 /* 312 * The following delay solves a problem with ATAPI Zip 100 drives 313 * where the Busy flag was apparently being deasserted before the 314 * unit was ready to receive data. This was happening on a 315 * 1200 MHz Athlon system. 10/26/01 25msec is too short, 316 * 40 and 50msec work well. idefloppy_pc_intr will not be actually 317 * used until after the packet is moved in about 50 msec. 318 */ 319 if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) { 320 timeout = floppy->ticks; 321 expiry = &idefloppy_transfer_pc; 322 } else { 323 timeout = IDEFLOPPY_WAIT_CMD; 324 expiry = NULL; 325 } 326 327 return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry); 328} 329 330static void ide_floppy_report_error(idefloppy_floppy_t *floppy, 331 struct ide_atapi_pc *pc) 332{ 333 /* supress error messages resulting from Medium not present */ 334 if (floppy->sense_key == 0x02 && 335 floppy->asc == 0x3a && 336 floppy->ascq == 0x00) 337 return; 338 339 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " 340 "asc = %2x, ascq = %2x\n", 341 floppy->drive->name, pc->c[0], floppy->sense_key, 342 floppy->asc, floppy->ascq); 343 344} 345 346static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, 347 struct ide_atapi_pc *pc) 348{ 349 idefloppy_floppy_t *floppy = drive->driver_data; 350 351 if (floppy->failed_pc == NULL && 352 pc->c[0] != GPCMD_REQUEST_SENSE) 353 floppy->failed_pc = pc; 354 /* Set the current packet command */ 355 floppy->pc = pc; 356 357 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { 358 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) 359 ide_floppy_report_error(floppy, pc); 360 /* Giving up */ 361 pc->error = IDEFLOPPY_ERROR_GENERAL; 362 363 floppy->failed_pc = NULL; 364 drive->pc_callback(drive); 365 return ide_stopped; 366 } 367 368 debug_log("Retry number - %d\n", pc->retries); 369 370 pc->retries++; 371 372 return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer, 373 IDEFLOPPY_WAIT_CMD, NULL); 374} 375 376static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) 377{ 378 debug_log("creating prevent removal command, prevent = %d\n", prevent); 379 380 ide_init_pc(pc); 381 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; 382 pc->c[4] = prevent; 383} 384 385static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) 386{ 387 ide_init_pc(pc); 388 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; 389 pc->c[7] = 255; 390 pc->c[8] = 255; 391 pc->req_xfer = 255; 392} 393 394static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, 395 int l, int flags) 396{ 397 ide_init_pc(pc); 398 pc->c[0] = GPCMD_FORMAT_UNIT; 399 pc->c[1] = 0x17; 400 401 memset(pc->buf, 0, 12); 402 pc->buf[1] = 0xA2; 403 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ 404 405 if (flags & 1) /* Verify bit on... */ 406 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ 407 pc->buf[3] = 8; 408 409 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); 410 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); 411 pc->buf_size = 12; 412 pc->flags |= PC_FLAG_WRITING; 413} 414 415/* A mode sense command is used to "sense" floppy parameters. */ 416static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, 417 u8 page_code) 418{ 419 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ 420 421 ide_init_pc(pc); 422 pc->c[0] = GPCMD_MODE_SENSE_10; 423 pc->c[1] = 0; 424 pc->c[2] = page_code; 425 426 switch (page_code) { 427 case IDEFLOPPY_CAPABILITIES_PAGE: 428 length += 12; 429 break; 430 case IDEFLOPPY_FLEXIBLE_DISK_PAGE: 431 length += 32; 432 break; 433 default: 434 printk(KERN_ERR "ide-floppy: unsupported page code " 435 "in create_mode_sense_cmd\n"); 436 } 437 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); 438 pc->req_xfer = length; 439} 440 441static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) 442{ 443 ide_init_pc(pc); 444 pc->c[0] = GPCMD_START_STOP_UNIT; 445 pc->c[4] = start; 446} 447 448static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, 449 struct ide_atapi_pc *pc, struct request *rq, 450 unsigned long sector) 451{ 452 int block = sector / floppy->bs_factor; 453 int blocks = rq->nr_sectors / floppy->bs_factor; 454 int cmd = rq_data_dir(rq); 455 456 debug_log("create_rw10_cmd: block == %d, blocks == %d\n", 457 block, blocks); 458 459 ide_init_pc(pc); 460 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; 461 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); 462 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); 463 464 memcpy(rq->cmd, pc->c, 12); 465 466 pc->rq = rq; 467 pc->b_count = 0; 468 if (rq->cmd_flags & REQ_RW) 469 pc->flags |= PC_FLAG_WRITING; 470 pc->buf = NULL; 471 pc->req_xfer = pc->buf_size = blocks * floppy->block_size; 472 pc->flags |= PC_FLAG_DMA_OK; 473} 474 475static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, 476 struct ide_atapi_pc *pc, struct request *rq) 477{ 478 ide_init_pc(pc); 479 memcpy(pc->c, rq->cmd, sizeof(pc->c)); 480 pc->rq = rq; 481 pc->b_count = 0; 482 if (rq->data_len && rq_data_dir(rq) == WRITE) 483 pc->flags |= PC_FLAG_WRITING; 484 pc->buf = rq->data; 485 if (rq->bio) 486 pc->flags |= PC_FLAG_DMA_OK; 487 /* 488 * possibly problematic, doesn't look like ide-floppy correctly 489 * handled scattered requests if dma fails... 490 */ 491 pc->req_xfer = pc->buf_size = rq->data_len; 492} 493 494static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, 495 struct request *rq, sector_t block_s) 496{ 497 idefloppy_floppy_t *floppy = drive->driver_data; 498 ide_hwif_t *hwif = drive->hwif; 499 struct ide_atapi_pc *pc; 500 unsigned long block = (unsigned long)block_s; 501 502 debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", 503 __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", 504 rq->cmd[0], rq->cmd_type, rq->errors); 505 506 debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", 507 __func__, (long)rq->sector, rq->nr_sectors, 508 rq->current_nr_sectors); 509 510 if (rq->errors >= ERROR_MAX) { 511 if (floppy->failed_pc) 512 ide_floppy_report_error(floppy, floppy->failed_pc); 513 else 514 printk(KERN_ERR "ide-floppy: %s: I/O error\n", 515 drive->name); 516 idefloppy_end_request(drive, 0, 0); 517 return ide_stopped; 518 } 519 if (blk_fs_request(rq)) { 520 if (((long)rq->sector % floppy->bs_factor) || 521 (rq->nr_sectors % floppy->bs_factor)) { 522 printk(KERN_ERR "%s: unsupported r/w request size\n", 523 drive->name); 524 idefloppy_end_request(drive, 0, 0); 525 return ide_stopped; 526 } 527 pc = &floppy->queued_pc; 528 idefloppy_create_rw_cmd(floppy, pc, rq, block); 529 } else if (blk_special_request(rq)) { 530 pc = (struct ide_atapi_pc *) rq->buffer; 531 } else if (blk_pc_request(rq)) { 532 pc = &floppy->queued_pc; 533 idefloppy_blockpc_cmd(floppy, pc, rq); 534 } else { 535 blk_dump_rq_flags(rq, 536 "ide-floppy: unsupported command in queue"); 537 idefloppy_end_request(drive, 0, 0); 538 return ide_stopped; 539 } 540 541 ide_init_sg_cmd(drive, rq); 542 ide_map_sg(drive, rq); 543 544 pc->sg = hwif->sg_table; 545 pc->sg_cnt = hwif->sg_nents; 546 547 pc->rq = rq; 548 549 return idefloppy_issue_pc(drive, pc); 550} 551 552/* 553 * Look at the flexible disk page parameters. We ignore the CHS capacity 554 * parameters and use the LBA parameters instead. 555 */ 556static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) 557{ 558 idefloppy_floppy_t *floppy = drive->driver_data; 559 struct gendisk *disk = floppy->disk; 560 struct ide_atapi_pc pc; 561 u8 *page; 562 int capacity, lba_capacity; 563 u16 transfer_rate, sector_size, cyls, rpm; 564 u8 heads, sectors; 565 566 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); 567 568 if (ide_queue_pc_tail(drive, disk, &pc)) { 569 printk(KERN_ERR "ide-floppy: Can't get flexible disk page" 570 " parameters\n"); 571 return 1; 572 } 573 574 if (pc.buf[3] & 0x80) 575 drive->atapi_flags |= IDE_AFLAG_WP; 576 else 577 drive->atapi_flags &= ~IDE_AFLAG_WP; 578 579 set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); 580 581 page = &pc.buf[8]; 582 583 transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); 584 sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); 585 cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); 586 rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); 587 heads = pc.buf[8 + 4]; 588 sectors = pc.buf[8 + 5]; 589 590 capacity = cyls * heads * sectors * sector_size; 591 592 if (memcmp(page, &floppy->flexible_disk_page, 32)) 593 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " 594 "%d sector size, %d rpm\n", 595 drive->name, capacity / 1024, cyls, heads, 596 sectors, transfer_rate / 8, sector_size, rpm); 597 598 memcpy(&floppy->flexible_disk_page, page, 32); 599 drive->bios_cyl = cyls; 600 drive->bios_head = heads; 601 drive->bios_sect = sectors; 602 lba_capacity = floppy->blocks * floppy->block_size; 603 604 if (capacity < lba_capacity) { 605 printk(KERN_NOTICE "%s: The disk reports a capacity of %d " 606 "bytes, but the drive only handles %d\n", 607 drive->name, lba_capacity, capacity); 608 floppy->blocks = floppy->block_size ? 609 capacity / floppy->block_size : 0; 610 } 611 return 0; 612} 613 614static int idefloppy_get_sfrp_bit(ide_drive_t *drive) 615{ 616 idefloppy_floppy_t *floppy = drive->driver_data; 617 struct ide_atapi_pc pc; 618 619 drive->atapi_flags &= ~IDE_AFLAG_SRFP; 620 621 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE); 622 pc.flags |= PC_FLAG_SUPPRESS_ERROR; 623 624 if (ide_queue_pc_tail(drive, floppy->disk, &pc)) 625 return 1; 626 627 if (pc.buf[8 + 2] & 0x40) 628 drive->atapi_flags |= IDE_AFLAG_SRFP; 629 630 return 0; 631} 632 633/* 634 * Determine if a media is present in the floppy drive, and if so, its LBA 635 * capacity. 636 */ 637static int ide_floppy_get_capacity(ide_drive_t *drive) 638{ 639 idefloppy_floppy_t *floppy = drive->driver_data; 640 struct gendisk *disk = floppy->disk; 641 struct ide_atapi_pc pc; 642 u8 *cap_desc; 643 u8 header_len, desc_cnt; 644 int i, rc = 1, blocks, length; 645 646 drive->bios_cyl = 0; 647 drive->bios_head = drive->bios_sect = 0; 648 floppy->blocks = 0; 649 floppy->bs_factor = 1; 650 set_capacity(floppy->disk, 0); 651 652 idefloppy_create_read_capacity_cmd(&pc); 653 if (ide_queue_pc_tail(drive, disk, &pc)) { 654 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); 655 return 1; 656 } 657 header_len = pc.buf[3]; 658 cap_desc = &pc.buf[4]; 659 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ 660 661 for (i = 0; i < desc_cnt; i++) { 662 unsigned int desc_start = 4 + i*8; 663 664 blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); 665 length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); 666 667 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", 668 i, blocks * length / 1024, blocks, length); 669 670 if (i) 671 continue; 672 /* 673 * the code below is valid only for the 1st descriptor, ie i=0 674 */ 675 676 switch (pc.buf[desc_start + 4] & 0x03) { 677 /* Clik! drive returns this instead of CAPACITY_CURRENT */ 678 case CAPACITY_UNFORMATTED: 679 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) 680 /* 681 * If it is not a clik drive, break out 682 * (maintains previous driver behaviour) 683 */ 684 break; 685 case CAPACITY_CURRENT: 686 /* Normal Zip/LS-120 disks */ 687 if (memcmp(cap_desc, &floppy->cap_desc, 8)) 688 printk(KERN_INFO "%s: %dkB, %d blocks, %d " 689 "sector size\n", drive->name, 690 blocks * length / 1024, blocks, length); 691 memcpy(&floppy->cap_desc, cap_desc, 8); 692 693 if (!length || length % 512) { 694 printk(KERN_NOTICE "%s: %d bytes block size " 695 "not supported\n", drive->name, length); 696 } else { 697 floppy->blocks = blocks; 698 floppy->block_size = length; 699 floppy->bs_factor = length / 512; 700 if (floppy->bs_factor != 1) 701 printk(KERN_NOTICE "%s: warning: non " 702 "512 bytes block size not " 703 "fully supported\n", 704 drive->name); 705 rc = 0; 706 } 707 break; 708 case CAPACITY_NO_CARTRIDGE: 709 /* 710 * This is a KERN_ERR so it appears on screen 711 * for the user to see 712 */ 713 printk(KERN_ERR "%s: No disk in drive\n", drive->name); 714 break; 715 case CAPACITY_INVALID: 716 printk(KERN_ERR "%s: Invalid capacity for disk " 717 "in drive\n", drive->name); 718 break; 719 } 720 debug_log("Descriptor 0 Code: %d\n", 721 pc.buf[desc_start + 4] & 0x03); 722 } 723 724 /* Clik! disk does not support get_flexible_disk_page */ 725 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) 726 (void) ide_floppy_get_flexible_disk_page(drive); 727 728 set_capacity(disk, floppy->blocks * floppy->bs_factor); 729 730 return rc; 731} 732 733/* 734 * Obtain the list of formattable capacities. 735 * Very similar to ide_floppy_get_capacity, except that we push the capacity 736 * descriptors to userland, instead of our own structures. 737 * 738 * Userland gives us the following structure: 739 * 740 * struct idefloppy_format_capacities { 741 * int nformats; 742 * struct { 743 * int nblocks; 744 * int blocksize; 745 * } formats[]; 746 * }; 747 * 748 * userland initializes nformats to the number of allocated formats[] records. 749 * On exit we set nformats to the number of records we've actually initialized. 750 */ 751 752static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) 753{ 754 struct ide_floppy_obj *floppy = drive->driver_data; 755 struct ide_atapi_pc pc; 756 u8 header_len, desc_cnt; 757 int i, blocks, length, u_array_size, u_index; 758 int __user *argp; 759 760 if (get_user(u_array_size, arg)) 761 return -EFAULT; 762 763 if (u_array_size <= 0) 764 return -EINVAL; 765 766 idefloppy_create_read_capacity_cmd(&pc); 767 if (ide_queue_pc_tail(drive, floppy->disk, &pc)) { 768 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); 769 return -EIO; 770 } 771 772 header_len = pc.buf[3]; 773 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ 774 775 u_index = 0; 776 argp = arg + 1; 777 778 /* 779 * We always skip the first capacity descriptor. That's the current 780 * capacity. We are interested in the remaining descriptors, the 781 * formattable capacities. 782 */ 783 for (i = 1; i < desc_cnt; i++) { 784 unsigned int desc_start = 4 + i*8; 785 786 if (u_index >= u_array_size) 787 break; /* User-supplied buffer too small */ 788 789 blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); 790 length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); 791 792 if (put_user(blocks, argp)) 793 return -EFAULT; 794 795 ++argp; 796 797 if (put_user(length, argp)) 798 return -EFAULT; 799 800 ++argp; 801 802 ++u_index; 803 } 804 805 if (put_user(u_index, arg)) 806 return -EFAULT; 807 808 return 0; 809} 810 811/* 812 * Get ATAPI_FORMAT_UNIT progress indication. 813 * 814 * Userland gives a pointer to an int. The int is set to a progress 815 * indicator 0-65536, with 65536=100%. 816 * 817 * If the drive does not support format progress indication, we just check 818 * the dsc bit, and return either 0 or 65536. 819 */ 820 821static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg) 822{ 823 idefloppy_floppy_t *floppy = drive->driver_data; 824 struct ide_atapi_pc pc; 825 int progress_indication = 0x10000; 826 827 if (drive->atapi_flags & IDE_AFLAG_SRFP) { 828 idefloppy_create_request_sense_cmd(&pc); 829 if (ide_queue_pc_tail(drive, floppy->disk, &pc)) 830 return -EIO; 831 832 if (floppy->sense_key == 2 && 833 floppy->asc == 4 && 834 floppy->ascq == 4) 835 progress_indication = floppy->progress_indication; 836 837 /* Else assume format_unit has finished, and we're at 0x10000 */ 838 } else { 839 ide_hwif_t *hwif = drive->hwif; 840 unsigned long flags; 841 u8 stat; 842 843 local_irq_save(flags); 844 stat = hwif->tp_ops->read_status(hwif); 845 local_irq_restore(flags); 846 847 progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000; 848 } 849 850 if (put_user(progress_indication, arg)) 851 return -EFAULT; 852 853 return 0; 854} 855 856static sector_t idefloppy_capacity(ide_drive_t *drive) 857{ 858 idefloppy_floppy_t *floppy = drive->driver_data; 859 unsigned long capacity = floppy->blocks * floppy->bs_factor; 860 861 return capacity; 862} 863 864#ifdef CONFIG_IDE_PROC_FS 865ide_devset_rw(bios_cyl, 0, 1023, bios_cyl); 866ide_devset_rw(bios_head, 0, 255, bios_head); 867ide_devset_rw(bios_sect, 0, 63, bios_sect); 868 869static int get_ticks(ide_drive_t *drive) 870{ 871 idefloppy_floppy_t *floppy = drive->driver_data; 872 return floppy->ticks; 873} 874 875static int set_ticks(ide_drive_t *drive, int arg) 876{ 877 idefloppy_floppy_t *floppy = drive->driver_data; 878 floppy->ticks = arg; 879 return 0; 880} 881 882IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks); 883 884static const struct ide_devset *idefloppy_settings[] = { 885 &ide_devset_bios_cyl, 886 &ide_devset_bios_head, 887 &ide_devset_bios_sect, 888 &ide_devset_ticks, 889 NULL 890}; 891#endif 892 893static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) 894{ 895 u16 *id = drive->id; 896 u8 gcw[2]; 897 898 *((u16 *)&gcw) = id[ATA_ID_CONFIG]; 899 900 drive->pc_callback = ide_floppy_callback; 901 902 if (((gcw[0] & 0x60) >> 5) == 1) 903 drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; 904 /* 905 * We used to check revisions here. At this point however I'm giving up. 906 * Just assume they are all broken, its easier. 907 * 908 * The actual reason for the workarounds was likely a driver bug after 909 * all rather than a firmware bug, and the workaround below used to hide 910 * it. It should be fixed as of version 1.9, but to be on the safe side 911 * we'll leave the limitation below for the 2.2.x tree. 912 */ 913 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { 914 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; 915 /* This value will be visible in the /proc/ide/hdx/settings */ 916 floppy->ticks = IDEFLOPPY_TICKS_DELAY; 917 blk_queue_max_sectors(drive->queue, 64); 918 } 919 920 /* 921 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes 922 * nasty clicking noises without it, so please don't remove this. 923 */ 924 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { 925 blk_queue_max_sectors(drive->queue, 64); 926 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; 927 } 928 929 (void) ide_floppy_get_capacity(drive); 930 931 ide_proc_register_driver(drive, floppy->driver); 932} 933 934static void ide_floppy_remove(ide_drive_t *drive) 935{ 936 idefloppy_floppy_t *floppy = drive->driver_data; 937 struct gendisk *g = floppy->disk; 938 939 ide_proc_unregister_driver(drive, floppy->driver); 940 941 del_gendisk(g); 942 943 ide_floppy_put(floppy); 944} 945 946static void idefloppy_cleanup_obj(struct kref *kref) 947{ 948 struct ide_floppy_obj *floppy = to_ide_floppy(kref); 949 ide_drive_t *drive = floppy->drive; 950 struct gendisk *g = floppy->disk; 951 952 drive->driver_data = NULL; 953 g->private_data = NULL; 954 put_disk(g); 955 kfree(floppy); 956} 957 958#ifdef CONFIG_IDE_PROC_FS 959static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, 960 int count, int *eof, void *data) 961{ 962 ide_drive_t*drive = (ide_drive_t *)data; 963 int len; 964 965 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); 966 PROC_IDE_READ_RETURN(page, start, off, count, eof, len); 967} 968 969static ide_proc_entry_t idefloppy_proc[] = { 970 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, 971 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, 972 { NULL, 0, NULL, NULL } 973}; 974#endif /* CONFIG_IDE_PROC_FS */ 975 976static int ide_floppy_probe(ide_drive_t *); 977 978static ide_driver_t idefloppy_driver = { 979 .gen_driver = { 980 .owner = THIS_MODULE, 981 .name = "ide-floppy", 982 .bus = &ide_bus_type, 983 }, 984 .probe = ide_floppy_probe, 985 .remove = ide_floppy_remove, 986 .version = IDEFLOPPY_VERSION, 987 .media = ide_floppy, 988 .do_request = idefloppy_do_request, 989 .end_request = idefloppy_end_request, 990 .error = __ide_error, 991#ifdef CONFIG_IDE_PROC_FS 992 .proc = idefloppy_proc, 993 .settings = idefloppy_settings, 994#endif 995}; 996 997static void ide_floppy_set_media_lock(ide_drive_t *drive, int on) 998{ 999 struct ide_floppy_obj *floppy = drive->driver_data; 1000 struct ide_atapi_pc pc; 1001 1002 /* IOMEGA Clik! drives do not support lock/unlock commands */ 1003 if ((drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE) == 0) { 1004 idefloppy_create_prevent_cmd(&pc, on); 1005 (void)ide_queue_pc_tail(drive, floppy->disk, &pc); 1006 } 1007} 1008 1009static int idefloppy_open(struct inode *inode, struct file *filp) 1010{ 1011 struct gendisk *disk = inode->i_bdev->bd_disk; 1012 struct ide_floppy_obj *floppy; 1013 ide_drive_t *drive; 1014 struct ide_atapi_pc pc; 1015 int ret = 0; 1016 1017 debug_log("Reached %s\n", __func__); 1018 1019 floppy = ide_floppy_get(disk); 1020 if (!floppy) 1021 return -ENXIO; 1022 1023 drive = floppy->drive; 1024 1025 floppy->openers++; 1026 1027 if (floppy->openers == 1) { 1028 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; 1029 /* Just in case */ 1030 1031 ide_init_pc(&pc); 1032 pc.c[0] = GPCMD_TEST_UNIT_READY; 1033 1034 if (ide_queue_pc_tail(drive, disk, &pc)) { 1035 idefloppy_create_start_stop_cmd(&pc, 1); 1036 (void)ide_queue_pc_tail(drive, disk, &pc); 1037 } 1038 1039 if (ide_floppy_get_capacity(drive) 1040 && (filp->f_flags & O_NDELAY) == 0 1041 /* 1042 * Allow O_NDELAY to open a drive without a disk, or with an 1043 * unreadable disk, so that we can get the format capacity 1044 * of the drive or begin the format - Sam 1045 */ 1046 ) { 1047 ret = -EIO; 1048 goto out_put_floppy; 1049 } 1050 1051 if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { 1052 ret = -EROFS; 1053 goto out_put_floppy; 1054 } 1055 1056 drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; 1057 ide_floppy_set_media_lock(drive, 1); 1058 check_disk_change(inode->i_bdev); 1059 } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { 1060 ret = -EBUSY; 1061 goto out_put_floppy; 1062 } 1063 return 0; 1064 1065out_put_floppy: 1066 floppy->openers--; 1067 ide_floppy_put(floppy); 1068 return ret; 1069} 1070 1071static int idefloppy_release(struct inode *inode, struct file *filp) 1072{ 1073 struct gendisk *disk = inode->i_bdev->bd_disk; 1074 struct ide_floppy_obj *floppy = ide_floppy_g(disk); 1075 ide_drive_t *drive = floppy->drive; 1076 1077 debug_log("Reached %s\n", __func__); 1078 1079 if (floppy->openers == 1) { 1080 ide_floppy_set_media_lock(drive, 0); 1081 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; 1082 } 1083 1084 floppy->openers--; 1085 1086 ide_floppy_put(floppy); 1087 1088 return 0; 1089} 1090 1091static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) 1092{ 1093 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); 1094 ide_drive_t *drive = floppy->drive; 1095 1096 geo->heads = drive->bios_head; 1097 geo->sectors = drive->bios_sect; 1098 geo->cylinders = (u16)drive->bios_cyl; /* truncate */ 1099 return 0; 1100} 1101 1102static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, 1103 unsigned long arg, unsigned int cmd) 1104{ 1105 idefloppy_floppy_t *floppy = drive->driver_data; 1106 int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; 1107 1108 if (floppy->openers > 1) 1109 return -EBUSY; 1110 1111 ide_floppy_set_media_lock(drive, prevent); 1112 1113 if (cmd == CDROMEJECT) { 1114 idefloppy_create_start_stop_cmd(pc, 2); 1115 (void)ide_queue_pc_tail(drive, floppy->disk, pc); 1116 } 1117 1118 return 0; 1119} 1120 1121static int ide_floppy_format_unit(ide_drive_t *drive, int __user *arg) 1122{ 1123 idefloppy_floppy_t *floppy = drive->driver_data; 1124 struct ide_atapi_pc pc; 1125 int blocks, length, flags, err = 0; 1126 1127 if (floppy->openers > 1) { 1128 /* Don't format if someone is using the disk */ 1129 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; 1130 return -EBUSY; 1131 } 1132 1133 drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS; 1134 1135 /* 1136 * Send ATAPI_FORMAT_UNIT to the drive. 1137 * 1138 * Userland gives us the following structure: 1139 * 1140 * struct idefloppy_format_command { 1141 * int nblocks; 1142 * int blocksize; 1143 * int flags; 1144 * } ; 1145 * 1146 * flags is a bitmask, currently, the only defined flag is: 1147 * 1148 * 0x01 - verify media after format. 1149 */ 1150 if (get_user(blocks, arg) || 1151 get_user(length, arg+1) || 1152 get_user(flags, arg+2)) { 1153 err = -EFAULT; 1154 goto out; 1155 } 1156 1157 (void) idefloppy_get_sfrp_bit(drive); 1158 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); 1159 1160 if (ide_queue_pc_tail(drive, floppy->disk, &pc)) 1161 err = -EIO; 1162 1163out: 1164 if (err) 1165 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; 1166 return err; 1167} 1168 1169static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file, 1170 unsigned int cmd, void __user *argp) 1171{ 1172 switch (cmd) { 1173 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: 1174 return 0; 1175 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: 1176 return ide_floppy_get_format_capacities(drive, argp); 1177 case IDEFLOPPY_IOCTL_FORMAT_START: 1178 if (!(file->f_mode & 2)) 1179 return -EPERM; 1180 return ide_floppy_format_unit(drive, (int __user *)argp); 1181 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: 1182 return ide_floppy_get_format_progress(drive, argp); 1183 default: 1184 return -ENOTTY; 1185 } 1186} 1187 1188static int idefloppy_ioctl(struct inode *inode, struct file *file, 1189 unsigned int cmd, unsigned long arg) 1190{ 1191 struct block_device *bdev = inode->i_bdev; 1192 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); 1193 ide_drive_t *drive = floppy->drive; 1194 struct ide_atapi_pc pc; 1195 void __user *argp = (void __user *)arg; 1196 int err; 1197 1198 if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) 1199 return ide_floppy_lockdoor(drive, &pc, arg, cmd); 1200 1201 err = ide_floppy_format_ioctl(drive, file, cmd, argp); 1202 if (err != -ENOTTY) 1203 return err; 1204 1205 /* 1206 * skip SCSI_IOCTL_SEND_COMMAND (deprecated) 1207 * and CDROM_SEND_PACKET (legacy) ioctls 1208 */ 1209 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) 1210 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, 1211 bdev->bd_disk, cmd, argp); 1212 1213 if (err == -ENOTTY) 1214 err = generic_ide_ioctl(drive, file, bdev, cmd, arg); 1215 1216 return err; 1217} 1218 1219static int idefloppy_media_changed(struct gendisk *disk) 1220{ 1221 struct ide_floppy_obj *floppy = ide_floppy_g(disk); 1222 ide_drive_t *drive = floppy->drive; 1223 int ret; 1224 1225 /* do not scan partitions twice if this is a removable device */ 1226 if (drive->attach) { 1227 drive->attach = 0; 1228 return 0; 1229 } 1230 ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); 1231 drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; 1232 return ret; 1233} 1234 1235static int idefloppy_revalidate_disk(struct gendisk *disk) 1236{ 1237 struct ide_floppy_obj *floppy = ide_floppy_g(disk); 1238 set_capacity(disk, idefloppy_capacity(floppy->drive)); 1239 return 0; 1240} 1241 1242static struct block_device_operations idefloppy_ops = { 1243 .owner = THIS_MODULE, 1244 .open = idefloppy_open, 1245 .release = idefloppy_release, 1246 .ioctl = idefloppy_ioctl, 1247 .getgeo = idefloppy_getgeo, 1248 .media_changed = idefloppy_media_changed, 1249 .revalidate_disk = idefloppy_revalidate_disk 1250}; 1251 1252static int ide_floppy_probe(ide_drive_t *drive) 1253{ 1254 idefloppy_floppy_t *floppy; 1255 struct gendisk *g; 1256 1257 if (!strstr("ide-floppy", drive->driver_req)) 1258 goto failed; 1259 1260 if (drive->media != ide_floppy) 1261 goto failed; 1262 1263 if (!ide_check_atapi_device(drive, DRV_NAME)) { 1264 printk(KERN_ERR "ide-floppy: %s: not supported by this version" 1265 " of ide-floppy\n", drive->name); 1266 goto failed; 1267 } 1268 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); 1269 if (!floppy) { 1270 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" 1271 " structure\n", drive->name); 1272 goto failed; 1273 } 1274 1275 g = alloc_disk(1 << PARTN_BITS); 1276 if (!g) 1277 goto out_free_floppy; 1278 1279 ide_init_disk(g, drive); 1280 1281 kref_init(&floppy->kref); 1282 1283 floppy->drive = drive; 1284 floppy->driver = &idefloppy_driver; 1285 floppy->disk = g; 1286 1287 g->private_data = &floppy->driver; 1288 1289 drive->driver_data = floppy; 1290 1291 idefloppy_setup(drive, floppy); 1292 1293 g->minors = 1 << PARTN_BITS; 1294 g->driverfs_dev = &drive->gendev; 1295 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; 1296 g->fops = &idefloppy_ops; 1297 drive->attach = 1; 1298 add_disk(g); 1299 return 0; 1300 1301out_free_floppy: 1302 kfree(floppy); 1303failed: 1304 return -ENODEV; 1305} 1306 1307static void __exit idefloppy_exit(void) 1308{ 1309 driver_unregister(&idefloppy_driver.gen_driver); 1310} 1311 1312static int __init idefloppy_init(void) 1313{ 1314 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); 1315 return driver_register(&idefloppy_driver.gen_driver); 1316} 1317 1318MODULE_ALIAS("ide:*m-floppy*"); 1319module_init(idefloppy_init); 1320module_exit(idefloppy_exit); 1321MODULE_LICENSE("GPL"); 1322MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); 1323 1324